Novel solid base catalyst for condensation of carboxylic acids

Ambareesh D. Murkute, James E. Jackson, Dennis J. Miller

    Research output: ResearchConference contribution

    Abstract

    A new mesoporous base catalyst abbreviated as Meso-MC was synthesized by incorporating cerium and manganese oxides (MnOX/CeO2) into hexagonal mesoporous silica (HMS). The physicochemical properties of the catalyst were characterized by means of N2 adsorption, low and wide-angle X-ray diffraction, transmission electron microscopy, and FTIR spectroscopy. The catalytic activity of Meso-MC in the ketonization of various carboxylic acids was evaluated and compared with unsupported MnO X/CeO2 in a fixed-bed reactor at atmospheric pressure. Meso-MC is more active than the unsupported MnOX/CeO2 because of higher surface area, higher dispersion, and greater homogeneity of the MnOX/CeO2 mixture in HMS. Spectroscopic studies reveal that some large particles of MnOX/CeO2 are dispersed onto the surface of HMS while others are embedded into HMS mesoporous.

    LanguageEnglish (US)
    Title of host publicationAIChE Annual Meeting, Conference Proceedings
    StatePublished - 2009
    Event2009 AIChE Annual Meeting, 09AIChE - Nashville, TN, United States
    Duration: Nov 8 2009Nov 13 2009

    Other

    Other2009 AIChE Annual Meeting, 09AIChE
    CountryUnited States
    CityNashville, TN
    Period11/8/0911/13/09

    Profile

    Carboxylic Acids
    Silicon Dioxide
    Condensation
    Catalysts
    Carboxylic acids
    Silica
    Atmospheric pressure
    Catalyst activity
    Spectroscopy
    Transmission electron microscopy
    Adsorption
    X ray diffraction
    manganese oxide
    ceric oxide
    Manganese oxide
    Cerium

    ASJC Scopus subject areas

    • Chemical Engineering(all)
    • Chemistry(all)

    Cite this

    Murkute, A. D., Jackson, J. E., & Miller, D. J. (2009). Novel solid base catalyst for condensation of carboxylic acids. In AIChE Annual Meeting, Conference Proceedings

    Novel solid base catalyst for condensation of carboxylic acids. / Murkute, Ambareesh D.; Jackson, James E.; Miller, Dennis J.

    AIChE Annual Meeting, Conference Proceedings. 2009.

    Research output: ResearchConference contribution

    Murkute, AD, Jackson, JE & Miller, DJ 2009, Novel solid base catalyst for condensation of carboxylic acids. in AIChE Annual Meeting, Conference Proceedings. 2009 AIChE Annual Meeting, 09AIChE, Nashville, TN, United States, 11/8/09.
    Murkute AD, Jackson JE, Miller DJ. Novel solid base catalyst for condensation of carboxylic acids. In AIChE Annual Meeting, Conference Proceedings. 2009.
    Murkute, Ambareesh D. ; Jackson, James E. ; Miller, Dennis J./ Novel solid base catalyst for condensation of carboxylic acids. AIChE Annual Meeting, Conference Proceedings. 2009.
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    AB - A new mesoporous base catalyst abbreviated as Meso-MC was synthesized by incorporating cerium and manganese oxides (MnOX/CeO2) into hexagonal mesoporous silica (HMS). The physicochemical properties of the catalyst were characterized by means of N2 adsorption, low and wide-angle X-ray diffraction, transmission electron microscopy, and FTIR spectroscopy. The catalytic activity of Meso-MC in the ketonization of various carboxylic acids was evaluated and compared with unsupported MnO X/CeO2 in a fixed-bed reactor at atmospheric pressure. Meso-MC is more active than the unsupported MnOX/CeO2 because of higher surface area, higher dispersion, and greater homogeneity of the MnOX/CeO2 mixture in HMS. Spectroscopic studies reveal that some large particles of MnOX/CeO2 are dispersed onto the surface of HMS while others are embedded into HMS mesoporous.

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